html{
    width:100%;
    height:100%;
    margin:0;
    padding:0;
}
body{
    width: 100%;
    height: 100%;
    margin:0;
    padding:0;
    background-image: url(../images/机器人.jpg);
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    background-position:50% 50%;
    background-repeat: no-repeat;
    background-attachment:fixed;
    background-color: #646461;
    font-family: Georgia, serif;
    -webkit-transition: All 2s ease;
    -moz-transition: All 2s ease;
    -o-transition: All 2s ease;
    -ms-transition: All 2s ease;
    transition: All 2s ease;
}
.container {
    margin:0;
    padding:0;
    background-color: rgba(0,0,0,0.0);
    border-radius: 1.5em;
    color: white;
    overflow: auto;
    position: absolute;
    left: 50%;
    top: 50%;
    width: 100%;
    height: auto;
    max-height: 100%;
    min-width: 90%;
    -webkit-transform: translate(-50%, -50%);
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -o-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    transition: height 1s ease;
    transition: top 1s ease;
}


.card-header{
    font-size: 24px;
    cursor:pointer;
}
.card-header:hover{
    text-decoration: underline;
}
.card{
    margin:0 auto;
    padding-left:30px;
    padding-right:30px;
    width: 46%;
    min-width:350px!important;
    background-color: rgba(0,0,0,0.3);
    border-left:none;
    border-right: none;
    border-radius: 1.5em;
}
.card-body{
}
.text-muted{
    color:white!important;
    text-align: right;  
}
.border-light{
    height:1px!important;
    border-bottom:none!important;
}

.show-page{
    color:white;
    text-align: left;
    text-decoration: none;
    font-weight: normal;
    font-style: normal;
    border: none;
    
}
.show-page p{
    background-color: rgba(0,0,0,0.5);
    padding: 0.25rem;
    border-radius: 0.5em;
    text-shadow: 0 1px 1px #333;
    list-style-type: none;
    margin-top: 1em;
    line-height: 180%;
    margin-left: 0.8em;
    font-size:1.2em;
}
.show-page a{
    color:white;
}


.ul-position{
    margin:0 auto;
    text-align: center;
}
ul{
    display: inline-block;
    overflow: hidden;
    margin:0;
    padding:0;
}
ul li{
    width:35px;
    height: 35px;
    list-style: none;
    background-color: white;
    float:left;
    margin:0 10px;
    padding:0;
    cursor:pointer;
    border-radius:50px;
    display: inline;
}
ul #li1{
    background-image: url(../logo/微博.png);
    background-position: 50% 50%;
    background-repeat:no-repeat;
    background-size: cover;
}
ul #li1:hover{
    background-image: url(../logo/微博-hover.png);
    background-position: 50% 50%;
    background-repeat:no-repeat;
    background-size: cover;
}
ul #li2{
    background-image: url(../logo/GitHub.png);
    background-position: 50% 50%;
    background-repeat:no-repeat;
    background-size: cover;
}
ul #li2:hover{
    background-image: url(../logo/GitHub-hover.png);
    background-position: 50% 50%;
    background-repeat:no-repeat;
    background-size: cover;
}
ul #li3{
    background-image: url(../logo/csdn.png);
    background-position: 50% 50%;
    background-repeat:no-repeat;
    background-size: cover;
}
ul #li3:hover{
    background-image: url(../logo/csdn-hover.png);
    background-position: 50% 50%;
    background-repeat:no-repeat;
    background-size: cover;
}
ul #li4{
    background-image: url(../logo/知乎.png);
    background-position: 50% 50%;
    background-repeat:no-repeat;
    background-size: cover;
}
ul #li4:hover{
    background-image: url(../logo/知乎-hover.png);
    background-position: 50% 50%;
    background-repeat:no-repeat;
    background-size: cover;
}

